Removable head for metal containers



March 26, 1929. w. s. WOODMAN Er AL 7 1,706,471

REMOVABLE HEAD FOR METAL CONTAINERS I Filed 001:.31, 1925 j enema Me. 26', 9a).

UNITED. STATES PATENT OFFICE.

WILLIAM S. WOOIDMAN, OF LAKEWOOD, AND JOHN O. SMITH, OF CLEVELAND, OHIO.

REMOVABLE HEAD FOR METAL CONTAINERS.

Application filed October 81, 1925. Serial No. 65,925.

This invention relates to removable heads for metal containers and has for its object to provide a removable head and securing means therefor which is simple in construction and which can be economically manufactured, the head and its securing means being so constructed thatthe head is fluid tight and capable of resisting rough usage.

A further object of the invention is to revide a contractible clamping band whic 1s engageable with the head at the open end of the container and with the body of the head within the chime in suchma'nner as to exert an inward pressure on the head when the ring is contracted.

A further objectis to so form the contractible band and to so secure the ends of the band that the ring when tightened is securely held against distortion.

A further object is to provide a contractible band in which the ring eor'itractin means is positioned upon the interior of t e ring contracting means is positioned upon the interior of the rin within the chime and in the depressed portion of the head.

The following description and accompanyi11 drawings set forth in detail certain means em dying the invention, the disclosed means, however, constituting but one of the various mechanical forms in which the minor ple of the invention may be employed.

Reference should be had to the accompanying drawings forming a. part of the specifica-' tion in which Fig. 1 is a side elevation of a metal container in the form of a steel drum with. the improved head applied thereto; Fig. 2 is a fragmentary axial section through an edge portion of the container and removable head and through the clampinv band; Fig. 3 is a section similar to Fig. 2 showing the clamping band as it is being slipped into place on the head; Fig. 4 is a plan view of the clamping band; Fig. 5 is a fragmentary top plan view showing the band tightening and fastening means.

Referring to the accompanying drawings, the metal container to which the removable head is applied has a cylindrical wall 1 which is open, at one end, the open end having applied thereto a bead ring 2 the inner edge of which is positioned against a circumferential bead 3 formed in the wall.

The bead ring 2 is an endless band which fits upon the exterior of the container and the bead 3 has a substantially square shoulder 4 being severed at one point, and having 14 rigidly secured to the adjoining ends.

on its outer side against which the inner edge a of a iameter such that it fits snugly within the body 1. The marginal portion of the head is bent outwardly from the outstanding portion 8 to form a flange 9 which overlies the ange 5 of the body of the container. A

packing strip is interposed between the flanges 5 and 9 to provide a fluid tight seal between the head and body of the container when the head is pressed inwardly. For pressin the head 7 inwardl to compress the paclring 10 between the ange 9 of the head and the flange 5 of the body, a contractible clamping band 11 is employed, the band 11 being of channel shape in cross section with the channel opening laterally with respect to the plane of the band so that the band can be slipped in an axial direction into place on the head of the container. The band'll is formed with an inner flange 12 which is' substantially cylindrical and of a diameter such that it can be slipped within the upstanding portion 8 of the head. The band 11 is also provided with an outer flange 13 which is shorter than the flange 12 and which is inclined inwardly toward the flange 12. There is sufficient space between the edge of the flange 13 and the flange 12 to permit the band to slip down band 11 is expanded as shown. in Fig. 3' of the drawing and, when the band is contracted after it has been put in place, the inwardly extending flange 13 bears against the outer face of the bead 6 causing the band to be drawn inwardly toward the head and exert a pressure thereon.

The band 11 is a transversely split band, lugs The ends of the band are drawn together to contract the ring by means of a bolt 15 passing through the lugs 14 and having a nut' 16 thereon which may be tightened to draw the lugs toward each other. In order to enable the band to be drawn more tightly against the bead and to more rigidly scam the ends of the band together, the lugs 14 inwardly of over the head 6 when the 50 I upon the head is transmitted through the vide a very rigid connection for the ends of the band. As the band is contracted, the in-v "wardly inclined flange 13 engagin the surface of the head 6 forces the I and odily inward causing thev flange 12 which bears against the body of the head? within the upstanding portion 8' thereof to exert a heavy thrust against the head pressing the same in-v wardly and causing the flange 9 to be drawn tightly against the packing 10. The clamgiing bolt 15 is prefei'abl substantially in t e lane of the portion 0 the flange 13 which bears against the bead 6'so that there is a maximum resistance to the spreading of the band at the point where the thrust is exerted on the band. The flange 13 at all points intermediate the ends of the band will, be very rigid by reason ofthe fact that any outward s reading of the flange will require elongation thereof and inasmuch as the band is very rigidly held substantially in the lane of engagement between the bead and ange where the outward thrust is applied the band will be maintained in tight engagement with the bead and may be sub ected to muchroughusage without impairing the fluid tight seal between the container and head." It should be noted that the clamping band is so 'de signed that only one flange, namely, the bead engagi g flange, has a thrust thereon which tends to distort it, and that the band tighten ing and fastening means is in substantially the lane of engagement of the flange with the bead where it exerts a maximum resistance to the spreading of the flange.

The portions of the clam ing band intermediate the bead engaging ange 13 and the flange 12 are clear of the bead and of the mar 'nal flange 9 of the head so that the inwar movement of the band in tightening is not interfered with and so that the thrust flange 12, the clamping action being due solely to the ressure exerted against the body of the head by the ed e of the flange 12 hearing a ainst it. The c amping ring since it is seats on the body of the head and extends over the overlapping edges of the head and body forms a very rigid chime for the barrel and at the same time greatly strengthens the head since it holds' the depressed portion thereof against distortion.

An importantfeature of the present invention is that the packing 10 is protected against injury due'to im act against the retaining band. vIf a barre should roll ofl of a platform and drop upon the end to which the removable head is attached the retaining band is subjected to a terrific impact at the point where it strikes the floor and in barrels in which the retaining band bearsagainst the flange of the head which rests upon the packing, the packing is very likely toj be ruptured by the im act causing a leak. The retaining band of t e present invention however,,does

not bear upon the flange of t e head which rests upon the packing and the impact on the band when the barrel is dropped, instead of being directl transmitted to the packing is transmitted t rou h the flange 12 of the bandto the body of thehead withinsthe marginal upstanding flange 8 and through the resilient sheet metal head to the. packing so that the pressure due to impact is in part dissipated due to the resiliency of the head and,

instead of being applied to one point to the packing it is distributed through a considerable length of the packing, enabling the packing to withstand impacts which would other- Wise damage the same to such an extent that the barrel would be no longer fluid tight.

, Having described our inventi 'on, we claim: 1. The eombmatlon with a metal contamerhaving an open end and an outwardly pro- "ecting bead around its open end and a head aving a marginal portion "adapted to overlie the head, of a contractible clamping band having a' part engageable] with the head t force the band inwardly owardthe head as the band is contracted an}? a part engageable with the head inwardly o engaging portion thereof to ress the head the marginahbad against the bead, and meansworeontracting said band.

2. The combination with a metal container having an open end, and an outwardly projecting bead around its open end and a head cupped to dprovide' an upstanding outer portionadapte to fit within the open end of the container, and havin a marginal flange adapted to overlie the bea of a contractible clamping band having a part engageable with the'under side of the'bead to force the band inwardly toward the head as the band is contracted and a part enga cable with the head to press the head towar the'bead, and meanscarried by the band and on the interior thereof within the depression of the head for contracting the same.

3. The combination with a metal container having an open end, an outwardly projecting bead around its open end and a head cupped to provide an upstanding outer portion adapted to fit within the open end of the container and having a marginal flange adapted to overlie the bead, and apacking interposed between the flange and bead, of a contractible clampin gageable with the v bead to force the band band having apart en- Ian inwardly of the upstandin portion thereof ,to press the. flange of the ead toward the to the plane of the band and having an mner tion adapted tofit within the open end 0 to draw the band toward the flange adapted to engage the head within the upstanding outer portion thereof, and an outer flange inclined inwardly toward the inner flange andadapted to engage said bead to draw the band toward the head and exert an inward thrust thereon when said band is contracted, and means for contracting said band and for holding the same in contracted position. H i

5. The combination with a metal container having an open end and an outwardly F proj ecting bead around its open end and a head cupped to provide an upstanding outer forthe container and having a marginal flange adapted to overlie the bead, of a contractible transversely split clamping band in the form of a channel opening laterally with respect to the plane of the band and having an inner flange adapted to-engage the head within the upstanding outer portion thereof, and an outer flange inclined inwardly toward themner flange and adapted to en age said bead an inward thrust thereon when said band is contracted, and meansv substantially in the plane of the bead engaging portion of the outer flange for drawing the ends of thebandtogether and fastening the same.

6. The combination with a metal-container .having an open end an outwardly projecting bead around its open end and a head cuppe to provide an upstanding outer ortion a apted to fit-within the open end 0 the container and having a marginal flange adapted to overlie the bead, ofa-contractible transversely split clamping band in the form of a channel opening laterally with respect to the lane of the band andhaving-an inner ange 1 adapted to engage the head within the up standing outer portion thereof, and an outer flange inclined inwardly toward the inner flange and adapted to engage said bead to draw the band toward the head and exert an inward thrust thereon whensaidband is contracted, and means carried by the inner flange ead and exert through said lugs 10. In a device of the character described, a contractible clamping bandsevered at one for drawin the ends of the band together and fastening t e same.

7. The combination with a metal container v having an open end and an outwardly projecting bead around its open end and a head cupped to provide an upstanding outer portion adapted to fit within the open end of the container and havin a marginal flange adapted to overlie theiead, of a contractible transversely split clamping band in the form of a channel opening laterally with respect to the plane of the band and having an inner flange adapted to engage the head within the upstanding outer portion thereof, and an outer flange inclined inwardly toward the in ner flange and adapted to engage said bead to draw the band toward the head and exert an inward thrustthereon when said band is contracted, and means carried by the inner flange "and positioned substantially in the planeof the bead engaging portion of the outer flange for the drawing the ends of the band together and fastening the same.

8. The combination with a metal container having an open end and an outwardly pro-v jecting head around its open end and a head. cupped to provide an upstanding outer portion adapted to fit within the open end of the container and having a marginal flange adapted to overlie the bead, of a contractible clamping band having parts engaging said bead and said head and adapted toexert an inward pres'sure'on the head when the band is contracted, and means on the interior of the head for contracting and fastenin the band.

9.- In a device of the character escri-bed, a contractible clamping band in the form of a channel opening laterally with respect to the plane of the band and having an inner substantially cylindrical flange and an outer 1 flange inclined inwardly toward said inner band and lying within the depression of the flange, said band bein severed at one point i and the adjoining en s having lugs rigidly secured thereto and extending inwardly from said inner flange and a bolt extending for tightening the band.

point and having lnwardly extending lugs rigidly secured to adjacent ends,fand a bolt extending through the lugs for tightening the band, said lugs eing. provided inwardly of the boltwithbearing projections on the op'-- posed faces thereof. a

In testimony whereof, we hereunto aflix oursignatures. Y

WILLIAM S. WOODMAN. JOHNO. SMITH; I 

